.content {
    position: relative;
    background-color: #0d0d0d;
}

/* 下载模块 */
.index-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url(../images/index_bigstar.jpg) no-repeat top / 3000px auto;
}

.index-bg-cover {
    position: absolute;
    top: 120px;
    left: 0;
    width: 560px;
    height: 487px;
    margin-left: 50%;
    background: url(../images/index_right_fire.png) no-repeat 0 0/cover;
}

.download-img {
    position: absolute;
    top: 60px;
    left: 0;
    padding: 20px 0;
}

.index-slogan {
    padding-top: 260px;
    color: #fff;
}

.index-slogan h3 {
    font-size: 30px;
    font-weight: 400;
    line-height: 42px;
}

.index-slogan h2 {
    font-size: 50px;
    line-height: 70px;
    padding: 10px 0;
}

.index-slogan p {
    font-size: 16px;
    color: #b0afaf;
    line-height: 22px;
}

.index-download {
    padding: 40px 0 150px;
}

.index-download-title {
    padding-bottom: 18px;
    font-size: 18px;
}

.index-download-title i {
    margin: 0 10px;
    font-size: 18px;
    color: #666;
}

.download-item {
    float: left;
    margin-right: 10px;
}

.btn-box .download-code {
    top: 50%;
    right: -10px;
    transform: translate(100%, -50%);
    z-index: 999;
}

.btn-box .download-code::after {
    top: 50%;
    left: -10px;
    margin-top: -5px;
    border-right-color: #fff;
}

.download-item a {
    display: block;
    width: 142px;
    border-radius: 4px;
    background: #ffd33e;
    line-height: 40px;
    text-align: center;
    color: #000;
}

.download-item .iconfont {
    margin-right: 5px;
    color: rgba(0, 0, 0, .7);
}

.download-item .download-icon {
    margin-left: 5px;
    font-size: 12px;
}

.version {
    clear: both;
    padding-top: 7px;
    border-radius: 4px;
    color: #777;
}

.version span {
    display: inline-block;
    width: 142px;
    margin-right: 10px;
    text-align: center;
}

/* 广告模块 */
.banner div {
    height: 320px;
    border-radius: 5px;
    overflow: hidden;
}

.banner div img {
    transition: all 0.6s;
}

.banner div:hover img {
    transform: scale(1.1);
}

/* 宣传模块 */
.index-advantage {
    display: flex;
    padding: 50px 0;
    justify-content: space-between;
}

.index-advantage li {
    width: 250px;
    text-align: center;
}

.index-advantage li img {
    width: 150px;
    height: 150px;
    margin-bottom: 16px;
}

.index-advantage li h3 {
    line-height: 20px;
    font-size: 14px;
    color: #fff;
}

.index-advantage li p {
    font-size: 12px;
    line-height: 1.8;
    color: #7b7b7b;
}

/* 新闻模块 */
.news {
    padding: 50px 0;
    border-top: 1px solid #262626
}

.news-title {
    color: #fff;
    font-size: 14px;
    text-align: left;
}

.news-list {
    display: flex;
    flex-wrap: wrap;
    margin-top: 20px;
}

.news-list li {
    color: hsla(0, 0%, 100%, .5);
    transition: color .2s ease-out;
    line-height: 32px;
    font-size: 12px;
    list-style: inside;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.news-list li:hover {
    color: #fff;
}

.news-list li:nth-child(odd) {
    width: 60%;
}

.news-list li:nth-child(even) {
    width: 40%;
}

.footer-about {
    border-top: 1px solid #262626;
}

/* 侧边广告模块 */
.ad-float {
    position: fixed;
    bottom: 40px;
    right: 40px;
}

.ad-float a {
    display: block;
}

.close-btn {
    position: absolute;
    right: 0;
    top: 15px;
    font-size: 20px;
    color: #333;
    cursor: pointer;
    z-index: 3;
}